Digestive Flashcards
Tobias ch 87-98
Blood supply to the stomach
Aorta –> celiac artery –> splenic, hepatic, left gastric arteries
What are the main branches of the hepatic artery supplying the gastrointestinal tract?
Gastroduodenal
PancreaticoduodenalT
The left gastroepiploic artery is a branch from what major artery?
Splenic artery
What are the major branches from the celiac artery?
Hepatic artery
Splenic artery
Left gastric artery
Innervation of the stomach
Sympathetic - celiac plexus
Parasympathetic - vagus nerves
How many layers of muscle compose the muscular layer of the stomach?
3 layers
- Longitudinal
- circular layer
- oblique layer
What are the main products/secretions of the following cells in the gastric glands?
Chief cells
Parietal cells
Mucus neck cells
Endocrine cells
Chief cells - pepsinogen
Parietal cells - hydrogen ions (acids), intrinsic factor
Mucus neck cells - mucus
Endocrine cells - gastrin, histamine, serotonin
Which is the largest tributary to the portal vein?
Cranial mesenteric vein
How much blood volume does the portal vein supply to the liver?
75-80%
Blood supply to the lips and cheeks
facial artery
infraorbital artery
The tongue is composed of what type of muscle
skeletal muscle
Extrinsic muscles of the tongue
Styloglossus
Hyoglossus
Genioglossus
innervated by Hypoglossal nerve
List types of papillae on the tongue and which are involved with taste
Fungiform*
Vallate*
Foliate*
Filliform
Conical
What cranial nerve innervates the muscles of the tongue?
Hypoglossal
Type of epithelium on the dorsal tongue
cornified squamous epithelium
Blood supply to the tongue
Lingual artery (branch of external carotid)
What cranial nerves are involved in swallowing
V trigeminal
VII facial
IX glossopharyngeal
X vagus
XII hypoglossal
Phases of swallowing
Oropharyngeal - oral stage (voluntary), pharyngeal stage, pharyngoesophageal stage
Esophageal stage
Gastroesophageal stage
